derek.holloway
7502bf64a4
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35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output text \
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// RUN: -verify %s
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void test_no_overflow_note(int a, int b)
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{
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int res;
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if (__builtin_add_overflow(a, b, &res)) // expected-note {{Assuming no overflow}}
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// expected-note@-1 {{Taking false branch}}
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return;
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if (res) { // expected-note {{Assuming 'res' is not equal to 0}}
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// expected-note@-1 {{Taking true branch}}
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int *ptr = 0; // expected-note {{'ptr' initialized to a null pointer value}}
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int var = *(int *) ptr; //expected-warning {{Dereference of null pointer}}
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//expected-note@-1 {{Dereference of null pointer}}
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}
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}
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void test_overflow_note(int a, int b)
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{
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int res;
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if (__builtin_add_overflow(a, b, &res)) { // expected-note {{Assuming overflow}}
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// expected-note@-1 {{Taking true branch}}
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if (res) { // expected-note {{Assuming 'res' is not equal to 0}}
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// expected-note@-1 {{Taking true branch}}
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int *ptr = 0; // expected-note {{'ptr' initialized to a null pointer value}}
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int var = *(int *) ptr; //expected-warning {{Dereference of null pointer}}
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//expected-note@-1 {{Dereference of null pointer}}
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}
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return;
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}
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}
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